Delaware egg color/trying to figure out who is laying what eggs

[Hellebore]

Today, for the first time, I have one more light brown egg than I can account for with certainty. We have 9 hens, 2 of whom are Delawares. I know that at least one of them is laying a very dark brown egg, terra-cotta shade to it with speckles. What color eggs do your Delawares lay? I am trying to figure out if this other light brown egg is from the other Delaware or from my 3rd EE.

Thanks for any info.